Traffic channel selecting method and base station equipment

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(11)

EP 1 435 744 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A2)

(48)	Corrigendum issued on:
	20.06.2012 Bulletin 2012/25

(88)	Date of publication A3:
	06.10.2004 Bulletin 2004/41

(43)	Date of publication:
	07.07.2004 Bulletin 2004/28

(21)	Application number: 04075096.0

(22)	Date of filing: 28.01.1999

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International Patent Classification (IPC):

H04Q 7/36^(0000.00)

H04B 7/005^(2006.01)

(84)	Designated Contracting States:
	DE FR GB IT SE

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Priority:

28.01.1998 JP 1585998

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	99901897.1 / 0973353

(71)	Applicant: NTT DoCoMo, Inc.
	Tokyo 100-6150 (JP)

(72)	Inventors:
	Ishikawa, Yoshihiro Kanagawa 239-0841 (JP) Onoe, Seizo Yokohama-shi Kanagawa 236-0032 (JP) Nakano, Etsuhiro c/o NTT DoCoMo, Inc. Chiyoda-ku Tokyo 100-6150 (JP) Ishii, Minami Yokohama-shi Kanagawa 224-0041 (JP) Hata, Masafumi Kanagawa 238-0012 (JP)

(74)	Representative: HOFFMANN EITLE
	Patent- und Rechtsanwälte Arabellastraße 4 81925 München 81925 München (DE)


	Remarks:
	This application was filed on 15 - 01 - 2004 as a divisional application to the application mentioned under INID code 62.

(54)	Traffic channel selecting method and base station equipment

(57) A decision is made as to whether a radio base station acting as an interference source is present in a macrocell or microcell, so that the interference from a mobile station transmitting at high power can be prevented in advance. The base station inserts its transmission power value of a forward broadcast channel into broadcast information. A newly installed base station C, receiving a forward frequency band, measures the received level of the broadcast channel, and captures the transmitted power value.
A propagation loss is calculated from the received level of the broadcast channel and the transmission power value acquired, and a decision is made that the channel is available, if the propagation loss is less than a certain value, and the received level is less than the threshold value.